Composition block



106. CoIlIIPOSI TIONS,

-. gross Heieres e V ii 81 COATING R PLASTIC. wax. u

PM M21", 1936 1,760,713

UNITED STATES PATENT OFFICE GEORGE I. A. 00KB, 01' mm mm (DEPOSITION BLOCK 101mm. Application fled July 15, 1927. Serial Io. All.

The object of the invention is to provide a composition in the form of an artificial or manufactured wood which may be light in wei ht, cheap to manufacture, and possess 5 big electrical insulating properties adapting it for use in electrical installations; and to provide a composition particularly adapted as a filler for artificial ties such as that illustrated in Patent No. 1,600,129.

10 The composition consists of gypsum, Portland cement or its equivalent, loose owdered asbestos, asphalt, and a vegetable her, such as wheat, rye or oat straw, or corn-stalks.

In the preparation of the composition, the

vegetable fiber, whether it be corn-stalks or straw is cut into short lengt 0 one and onea f, two or three inches, being shredded and ound int The asphalt is hea re era y m eameated kettles, to the point where it flows readil and this fiber is added to it together with t e gypsum, cement and asbestos, the whole being stirred until the mixture is com lete, when it is run to h draulic resses an pressed into slabs or b ocks of t e desired form.

The proportions of the constituent eleinents are by the weight substantially as folows:

W en, poun nature.

GEORGE F. A. 00115. 

